Stranding machine for the rapid manufacturing of strands of textile fibers or wires either alone or coupled together



Feb. 21; 1928 1,660,049

A ET AL STRANDING MACHINE FOR THE RAPID MANUFACTURING 0F STRANDS OF TEXTILE FIBERS 0R WIRES EITHER ALONE OR COUPLED TOGETHER Filed Jan. 17, 1927 4 Sheets-Sheet 1 III/III Fgbo 219 S. RIVA ET AL STRANDING MACHINE FOR THE RAPID MANUFACTURING 0F STRANDS 0F TEXTILE FIBERS 0R WIRES EITHER ALONE 0R COUPLED TOGETHER Filed Jan, 17, 1927 4 Sheets-Sheet 2 Feb. 21, 1928. 1,660,049

S. RIVA ET AL STRANDING MACHINE FOR THE RAPID MANUFACTURING OF STRANDS 0F TEXTILE FIBERS OR WIRES EITHER ALONE 0R COUPLED TOGETHER Filed Jan. 1927 4 Sheets-Sheet 5 Fig.4

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v ,S. RIVA ET AL I STRANDING MAC E FOR THE RAPID MANUFACTURING 0F STRANDS OF I TEXTILE OR WIRES EITHER ALONE OR C 5 Filed Jan. 17, 1927 OUPLED TOGETHER 4 Sheets-Sheet 4 gwue'ntou 3%11 I I 61mm;

Patented Feb. 21, 1928. it I UNITED STATES PATENT snconno RIVA AND mnnmo anon, on ronmo, IT LY.

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Application filed January 17, 1927, Sbrial 110. 161,887, and in German! Hay 1,1924.

It is known that the usual stranding mastruction, of the device for the lowering of chines, which are largely used for the manuthe threads or wires of one series of spools, facturing of wiring and cables for electric 3 is the plan view of the same. Fig. mains, as well as for trimmings, etc., have 4 1s a plan view of one-half ofthe machine, 6 a very low -efliciency for the following Fig. 4 1s a horizontal cross section of the no reasons; other half of the machine. I x The said machines work according to two As it may be seen from the drawings, the different principles, that is to say: ne type machine is essentially formed by an outer of such machine has two series of movable disc 1, or spool carrier, whose lower part is. i spools which are necessary for the said cylindrical, while its upper art is en arged o6 manufacture, the spools 'of one of these upwards in the form of a asin. On the series during the work are continually outer surface of the lower cylindrical part obliged to perform very swift displacements of the plateau 1 is placed a series-of spools in order to displace themselves from the 3 carriedby fixed bearings 4, while its inner points more distant from the axis of the [1121- part is provided above with dove-tailed cir- 70 chine to the points nearer the same, with cular guides 5, in which run a second series violent oscillations of the tension and reof movable spools 6, which, b means of a lease of counter-weights or springs, which certain number of driving hoo s or the like, serve to stretch the threads or the wires are connected with a second disc'or carrier 7 alone or coupled, with the consequence of 7 placed internally in regard to the first one 76 a swift tension and release of them and their and coaxial with the same. v breaking. Another type of such machine The two discs 1 and 7 are rotated in oppohas two series of spools that rotate in opposite directions, but with the same angular site directions and are regulated in their veloclty, bymeans of two equal bevel gear work bymeans of mechanisms provided with wheels 8, 9 respectively mounted above and cams, small carriages and sinusoidal slots below and driven by the same bevel gear. in which run driving pins or pivots which wheel 10. This bevel gear wheel 10 is in eflfect at determined intervals the lowering its turn driven by the drivin pulley 11, of the threads of one series of spools in which may eventually be coup ed with an 30 order to permit the other series to pass about automatic disconnecting device, not shown 8!! them. It is therefore clear that it is imin the drawing. possible to obtain with such machines reat The inner disc 7-is fixed to the upper part working velocities and also to avoid the eafof a vertical hollow shaft 13 on the lower ening noise produced by them. part of which is mounted the lower bevel 5 The object of the present invention is to gear wheel 9, while the outer disc 1 is mount- "avoid these drawbacks lay means of a stranded loose on the intermediate part of the said ing machine of reat e ciency and of prachollow shaft 13 and rotates on ball thrust tically unlimited velocity, because in; the bearings placed between a ring 14 projectsame not only is the displacement of large ing from the said hollow shaft 13 and the 0 masses in movement and their consequent base 16 of the machine. To the lower part shocks avoided, but there are also omitted of this outer disc 1 is fixed the upper bevel the cams, and pins running at great speed gear wheel 8. L in sinusoidal slots etc., for the reason that The base 16 of the machine i provided all necessary movements for twisting the with supporting legs 17 for securin the 45 threads or wires are obtained by means of machine to the floor, while another si e leg 10o operation with compressed air. 18 serves to support the shaft 19 of the The figures of the accompanying drawdriving pulley 11. ings illustrate by way of example one mode The inner end 19 of this shaft '19 carries of constructing a stranding machine accordthe driving bevel gear wheel 10 and is jour- 00 mg to the present invention. naled on a suitable point of the base 16 of Fig. 1 is a partially sectioned elevation of the machine, while 1ts outer end 19" pro one-half of the machine. 1 jecting beyond the side support 18 carries a Figure 1 is, a similar view of the other bevel ear wheel 20 in engagement with anhalf of the. machine. other %)8V61 gear wheel 21. The shaft 22 05 Fig. 2 is a front view of a detail of conof the wheel 21, with the intermediate of by means of a series of holes 29, arrangeda worm-gear 23, 24 and of the horizontal shaft 25, drives a grooved pulley 26, whose groove has the shape usually employed for this scope in the collecting devices of the stranding machines. The angular velocity of this grooved pulley 26 is regulated for each single case by means of change gears.

By means of the driving parts 20, 26 the collecting device of the machine is operated according to its capacity.

Inside the vertical hollow shaft 13 of the machine is arranged a concentric shaft 27 suitably separated from the shaft 13, and both shafts areconnected together above and below in such a manner that they leave between themv an annular chamber 28, which,

near the lower end of the shaft 13, is continually supplied with compressed air by a device or ring case 30, in which the said end rotates with slight friction.

The case 30 is in its turn in communication with a reservoir (not shown) of compressed air or with an air compressor by means of the tube 31. V

In the bottom of the outer disc 1 is formed a chamber 34 supplied with the compressed air coming, from'a hollow 32 carried by the disc 7 and which receives continually air from the chamber 28 of the vertical shaft 13, 27 by means of a certain number of pipes 33. Although this hollow ring 32, is secured to the inner disc 7 and therefore rotates in the opposite direction to that of the outer disc 1 in which is provided the chamber 34, it remains however continually in communication with the said chamber 34 by means of a suitable number of holes 35.

The periphery of the outer disc 1 is provided with a suitable number of communication holes 36, in proportion with the number of spools of the machine, Which holes communicate with as many cylinders 37 in which are placed single acting pistons 38. These pistons 38, during the moments in which they are not under the action of the compressed air are kept in position of rest by means of springs not shown in Fig. 1 for simplicity.

To the rods 39 of these pistons 38 is suspended, by means of screw bolts and nuts or the like, a flanged ring 40, whose function is that of controlling the whole series of thread-guiding whips 41 (Fig. 2), which regulate at determined intervals the lowering of the threads of the outer or fixed spools 3.

The whip controlling devices hereinafter described are connected to the cylindrical border of the said ring 40 and are mounted on the part 2 of disc 1 in such a position that they cannot come into conflict either with the fixed spools 3 or with their supports 4. They are applied in equal number to that of the said spools, and each deviceconsists of a small support 42, in which is pivoted the lowerend of a rod 43 the upper end of which is connected to a suitable point of a lever 44 pivoted at 45 to the outer surface of the enlarged part 2 or basin of the outer disc 1. i

The free end of the lever 44 is provided with a curved slot 46, which passes around a pivot 47 placed at the lower end of each whip 41.

The upper end of each whip 41 is provided with an eye 48 in which passes the thread or wire coming from the corresponding fixed spool 3. A pivot 49 fixed to the end of the lever 44 beyond the curved slot 46, compels the lever 41 to oscillate downwards or upwards around its pivot 47' every time the rod 43 is lowered or raised in consequence of the movements of the controlling ring 40.

The are described by the end of the whips corresponds to the mean curvature of the corresponding grooves 50, (one for each whip), made in the upper enlarged part 2 of the outer disc 1. so that when theeye 48 describes its are around its pivot 47, the thread or wire passing is compelled to enter in the same and go to the bottom of the corresponding groove 50, whose depth is calculated to extend under the lowest point of the sliding spools 6 and their supports 73.

The threads or wires 51 coming from the sliding spools 6 cross in the upper part of the machine with the threads ,0! wires 52 coming from the fixed spools 3, that is to say between the limiting device 53 of the lower convergence, which rotates 'withthe cone 54 forming part of vertical shaft 13, 27 of the machine, and the limiting device 55 of the upper convergence, shown in Fig. 1.

The boss 56 of the inner disc 7 is provided with two projecting rings or flanges 57-, 58, which serve as supports for the corresponding springs 59,60 which control two rings 61,

62 respectively whose peripheries are provided with circular grooves in which are placed the end rollers 63, 63 of two trailing levers 64, 64' pertaining to each sliding spool 6. The lower ends of the trailing levers 64, 64' are shaped as hooks or the like, and the corresponding levers can oscillate around their pivots 71, 71' carried by as many supports 72, 72 projecting upwards schematically from the upper surface of the inner disc 7.

Said lower end of these trailing levers engage the lower part of the supports 76 of the sliding spools 6, while the other end is provided with the said rollers 63, 63. These rollers are not fixed in the corresponding grooves of rings 61, 62, but they are arranged in them with a suitable clearance which allows a little displacement of the said rollers during the movement of the rings, and have only the function of diminishing the friction between .theupper ends Y rollers 63, 63'

trailing devices, as shown in of the trailing levers and the corresponding grooves. 1 Y

The lower part of each support 73 of the sliding spools 6 can be for instance provided with two holes whose distance from one another is the same as the distance between the corresponding ends 74, 7 1 of two trailing levers 6%, 61' pertaining to the same pair of them, and these ends enter inside the said holes and come out of them in alternate manner.

The upper part of the chamber 34 of the base of the outer disc 1 is perforated at determined intervals with two series of holes. One of these series serves to give compressed air to the cylinders, and above said holes, with the interposition of one or two intermediate plates 65, 66, glides the base 7' of the inner disc 7, which is likewise perforated at like intervals. These intermediate plates act as distributing slide valves for the compressed air coming from the chamber 34 in order to bring it to the cylinders 67 of the inner disc 7 in the right intervals of time which are necessary for regulating the movement of the whips in regard to that of the trailing devices.

Upon the bottom 7 of the inner disc 7 is placed a series of single acting cylinders 67 with pistons working with compressed air. One half of these cylinders has the pistons in connection with the lower grooved ring 62 which commands one half of the the other half of the cylinders has the pistons in connection with the upper grooved ring 61, which commands the other half of thetrailing levers as shown in the left hand part of Fig. 1.

The trailing levers, which are two for each sliding spool 6, are so arranged as to work in alternating manner, because for trailing each spool a. single lever is necessary, so that each spool is trailed by turns through one or the other of the levers of the same pair according as the cylinders 67 and the corresponding pistons exert their action on the upper grooved ring 61 or on the lower one 62.

The corresponding levers are by turns freed by means of their upper ends and their in the following manner: When the machine is setin motion and the device supplying the compressed air is regularly working, one or'the other of the points of each pair of levers is alternately freed from the corresponding hole of the spool support 7 30f the sliding spools 6, because the rings 61 and 62'are alternately raised by the actionof the pistons in cylinders 67. The result is'that, when one of the spoolsupports 73 with its corresponding sliding spool 6 comes into relation with one of the slots 50 of the enlarged upper part 2 of the outer disc 1, the threads or wires52 of the Fig. 1, and

fixed spools 3 which are that moment at the bottom of the said slots 50, would come into conflict with the trailing levers 64, 64 if they, with rapid movement should not change their position. This possibility of conflict is avoided by the point 74: of one of the trailing levers coming out of the corresponding hole of the spool-support 73 while the point 7a of the other trailing lever of the same pair enters into the other hole of the same spool-support 7 3.

As it may be seen, the machine constructed according to the present invention works.

partly mechanically and partly pneumatically. The mechanical part is limited to operate the rotation of the two discs 1 and 7 in opposite directions but with the same angular velocity.

The working of the machine takes place in the following manner: After having set the machine in motion by means of the driving pulley 11, the bevel gear 10 through the upper bevel gear 8 and the lower bevel gear 9, causes the rotation of the two discs 1 and 7 in opposite directions. Under the action of the compressed air passing from the chamber 30 to the annular passage 28 existing between the'tubes 13 and 27 which form the shaft of'the machine, the air, through the pipes 33, the hollow ring 32 and the chamber 34, reaches the series of cylinders 67, whose pistons by alternately raising cause the setting free of one half of the trailing levers 64: or 64'. This happens when these trailing lovers are in proximity of the curved slots 50.

At the same time, the compressed air coming from the pipes 83 finds at suitable intervals the free passage for filling up the outer cylinders 37, whose pistons 38 by means of their sinking cause thecontemporary sinking of all the whips 41 by means of their operating ring 40.

The lowered whips bring the threads or wires 52 of the fixed spools under the sliding spools 6, which by proceeding in the way of their rotation arrive at a point in which the first half of the trailing levers, for instance 64, renew their coupling, and, almost at the same time, but with a very little delay, the second half of the trailing levers 64 release their coupling, so that they can pass under the threads or wires 52 of the said fixed spools 3, which threads continue to remain below by the action of the whips.

WVhen the second series of the trailing levers 64' is coupled again with the corresponding supports'of the sliding spools, the whips rise a ain and permit the passage 0 another sliding spool 6 under the threads of the fixed spools 3. The movements of uncoupling and coupling of the first half of'trailing levers is simultaneous, and the movement of uncoupling and coupling of the second half of trailing levers is simultaneous,

and likewise the lowering and the rising of the series of whips.

The said. three movements are angularly spaced for the purpose of obtaining the proper working. The coupling and uncoupling of-the outer ends of the trailing levers with the'correspon'ding spool-supports 73' 4 the plate 66 is screwed to' the inner disc 7,

slide upon each other and by means of their holes the movements of coupling and uncoupling'of" the trailing levers take place at like. angular. intervals.

The discharge of the compressed air, which has already accomplished its work, from the cylinders 67 of the inner disc 7, takes place through a certain number of holes 68 which correspond to the outlet holes 70 of the bottom of the outer disc through the corresponding holes of the said intermediate plates 65, 66.

The discharge of the compressed air from the cylinders 37 of'the outer disc 1, takes place through a suitable number of niches I 69 (Fig. 4) arranged in the ring 32 which claim as new and desire turns with the inner disc 7 It will be understood that the invention is not limited to the particular construction arts herein deadvantageous by'the circumstances or therequirements of practice without departing from the essential nature of this invention.

Having thus described our invention, we to secure by Letters Patent: g Y

1. A stranding machine comprising an outer rotary carrier, an outer series of spools carried by the latter, a concentric inner series of spoolsslidably mounted on the carrier, an inner carrier, means to rotate the carriers'in opposite directions at the same angular velocity, two series of driving members for the inner series of, spools mounted on the inner carrier, a series of thread guides for the outer series of spools mounted on the outer carrier, a thread-guide actuating member carried by the latter, and pneumatically operated mechanism controlled by the rotary movements of the carriers for o erat ing said actuating member and simu taneousl operating one of the series of driving members. i a

2. A stranding machine comprising an outer carrier and outer series of spools car ried bythe latter, a concentric inner series of spool supports slidably mounted on the carrier, an inner carrier, means to rotate the carriers in opposite directions at the same angular velocity, two series of levers ful- 3. A stranding machine comprising an outer carrier, an outer series of spools carried by the latter, a concentric inner series of spool supports slidably mounted on the carrier, an inner carrier, means to rotate the carriers in opposite directions at the same angular velocity, two series of levers fulcrumed on the inner carrier in operative relation to the spool supports, a controlling member for each series of levers, a series of pistons operatively connected with each control member, an air distributing chamber in the outer carrier, and means operated by the rotation of the carriers to alternately supply air from said chamber to each series of pistons for alternately actuating said control members.

4. A stranding machine comprising an outer carrier, an outer series of spools carried by the latter, a concentric inner series of spool supports slidably mounted on the carrier, an inner carrier, means to rotate the carriers in opposite directions at the same angular velocity, two series of levers fulcrumed on the inner carrier in operativerelation to the spool supports, a controlling member for each series of levers, a series of pistons carried by the inner carrier operatively connected with each control member, an air distributing chamber in the outer carrier, and means operated by the rotation of the carriers to alternately supply air from said chamber to each series of pistons for alternately actuating said control members.

tral shaft having a chamber for compressed air, an outer carrier rotatably mounted on the shaft and havin municating with the c amber of the shaft, two concentric series of spools mounted on the carrier, means includln the carrier for revolving the two series 1n opposite direction at the same angular velocity, a series of thread guides for one series of spools mounted on the carrier, a plurality of -cylinders on the latter, anair distributing chamber com- 5. A stranding machine comprising a cenan air chamber com-* municating with the chamber of the shaft and having ports controlled by the carrier for supplying air to said cylinders, pistons in said cylinders, a thread-guide actuating member carried by said pistons and operable by the movements of the latter to operate the thread-guides.

6. A stranding machine comprising a central hollow shaft constituting a compressed air chamber, an outer carrier rotatably mounted on the shaft and having a chamber communicating with said air chamber, an inner carrier fixed on the shaft, means including the. latter for rotating the carriers in opposite directions, an outer series of spools carried by the outer carrier, a concentric 1nner series of spool supports slidable on the latter, two series of two-armed levers fulcrumed on the inner carrier, each lever having one end arranged to engage a spool support, a controlling member for each series of levers movable axially of the shaft and operativcly connected with the other ends of the levers, two series of pneumatically operated means connected with said controlling members, and means operated by the rotation of the carriers whereby the air from the chamber in the outer carrier is supplied alternately to each series of pneumatically operated means.

7. A strandin machine comprising a central hollow shaft constituting a compressed air chamber, an outer carrier rotatably mounted on the shaft and having a chamber communicating with said air chamber, an inner carrier fixed on the shaft, means including the latter for rotating the carriers in opposite directions, an outer series of spools carried by the outer carrier, a concentric inner series of spool supports slidable on the latter, two series of two-armed levers fulcrumed on the inner carrier, each lever having one end arranged to engage a spool support, a controlling member for each series of levers movable axially of the shaft and operatively connected with the other ends of the levers, two series of cylinders carried by the inner carrier, pneumatically operated pistons in said cylinders connected to the controlling members, ports for connecting the cylinders with the chamber in the support, and ported valve plates connected to the carriers interposed between the cylinders and carrier chamber, whereby compressed air from the latter is admitted to the cylinders for actuating the controlling members alternately.

8. A stranding machine comprising a central hollow shaft constituting a compressed air chamber, an outer carrier rotatably mounted on the shaft and having a chamber communicating with said air chamber, an inner carrier fixed on the shaft, means including the latter for rotating the carriers in opposite directions, an outer series of spools carried by the outer carrier, a concentric inner series of spool supports slidable on the latter, two series of two-armed levers fulcrumed on the inner carrier, each lever having one end arranged to engage a spool support, a controlling member for each series of levers movable axially of the shaft and operatively connected with the other ends of the levers, two series of cylinders carried by the inner carrier, pneumatically operated pistons in said cylinders connected to the controlling members, ports for connecting the cylinders with the chamber in the supports, ported valve plates connected to the carriers interposed between the cylinders and carrier chamber, an annular air distributing chamber carried by the inner carrier, communicating with the central air chamber, a plurality of cylinders on the outer carrier having ports for communication with said annular chamber, pistons in the last named cylinders, an annular controlling member suspended from the last named pistons, and thread-guides pivoted on the outer carrier operatively connected to the controlling member.

9. A standing machine, comprising an outer rotary carrier, an outerseries of spools carried by the latter, a concentric inner series of spool supports slidably mounted on the carrier, an inner carrier, means to rotate the carriers in opposite directions at the same angular velocity, two series of driving members on the inner carrier, means for alternately actuating each series of driving members to connect them to the spool supports, a thread guide for each spool of the outer series consisting of an arm pivoted on the periphery of the outer carrier adjacent each spool and having an eye in its free end for the thread, an arcuate slot in said periphery concentric to the pivot of said arm to permit a thread in the eye to pass below said spool supports, a controlling member carried by the outer support ope'ratively connected with the pivoted arms for raising and lowering the latter, and means whereby said controlling member is operated simultane- 1cgusly with the actuation of the driving memers.

SECONDO RIVA. MARINO PRON. 

